So you're going to narrow the focus down to one aspect. That's a wise choice. It's far more mark worthy to focus on one topic and do a good job of analyzing it than to spread yourself too thin and not cover the topic to the depth that is expected.

An instructor I had for effective presentation once spent 20 minutes talking about eggs. Not all of them. Just the ones we buy and cook for breakfast. I learned a lot about both eggs and the importance of focusing a topic.

For starters on your paper google for schumann, hoerner, maule stol and winglets along with the term "wing tip" to get some starting points. They all have their uses, strong points and weak points that make them perfect for some applications while being an anchor for others.